1 /*- 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1992, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)pig.c 8.2 (Berkeley) 5/4/95 35 * $FreeBSD: src/games/pig/pig.c,v 1.7 1999/11/30 03:49:08 billf Exp $ 36 * $DragonFly: src/games/pig/pig.c,v 1.3 2003/11/12 14:53:53 eirikn Exp $ 37 */ 38 39 #include <sys/types.h> 40 41 #include <ctype.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <unistd.h> 46 47 void pigout (char *, int); 48 void usage (void); 49 50 int 51 main(argc, argv) 52 int argc; 53 char *argv[]; 54 { 55 int len; 56 int ch; 57 char buf[1024]; 58 59 while ((ch = getopt(argc, argv, "")) != -1) 60 switch(ch) { 61 case '?': 62 default: 63 usage(); 64 } 65 argc -= optind; 66 argv += optind; 67 68 for (len = 0; (ch = getchar()) != EOF;) { 69 if (isalpha(ch)) { 70 if (len >= sizeof(buf)) { 71 (void)fprintf(stderr, "pig: ate too much!\n"); 72 exit(1); 73 } 74 buf[len++] = ch; 75 continue; 76 } 77 if (len != 0) { 78 pigout(buf, len); 79 len = 0; 80 } 81 (void)putchar(ch); 82 } 83 exit(0); 84 } 85 86 void 87 pigout(buf, len) 88 char *buf; 89 int len; 90 { 91 int ch, start; 92 int olen; 93 94 /* 95 * If the word starts with a vowel, append "way". Don't treat 'y' 96 * as a vowel if it appears first. 97 */ 98 if (index("aeiouAEIOU", buf[0]) != NULL) { 99 (void)printf("%.*sway", len, buf); 100 return; 101 } 102 103 /* 104 * Copy leading consonants to the end of the word. The unit "qu" 105 * isn't treated as a vowel. 106 */ 107 for (start = 0, olen = len; 108 !index("aeiouyAEIOUY", buf[start]) && start < olen;) { 109 ch = buf[len++] = buf[start++]; 110 if ((ch == 'q' || ch == 'Q') && start < olen && 111 (buf[start] == 'u' || buf[start] == 'U')) 112 buf[len++] = buf[start++]; 113 } 114 (void)printf("%.*say", olen, buf + start); 115 } 116 117 void 118 usage() 119 { 120 (void)fprintf(stderr, "usage: pig\n"); 121 exit(1); 122 } 123